Camcorders: Sony DCR-HC90 vs. Panasonic PV-GS250

Sony DCR-HC90 vs. Panasonic PV-GS250

I am selling my camera on ebay and I am going to buy a new one. I have been looking at the Sony DCR-HC90 and Panasonic PV-GS250. My camera that I am selling is a Sony DCR-HC43E PAL. I like the camera and the image is great. I like the touch-screen and the ability to record in 16:9 widescreen. The Sony DCR-HC90 has similar features to this camera and seems like an improved version of the camera that I have. I don't know much about Panasonic cameras and I am wondering if I should think about buying the Panasonic instead. I want to use the camera to record my water rocket launchs and movies that I decided to make. I want the camera to be able to focus on a rocket while it is taking off and coming down. Also which camera would be the best at recording a high speed water rocket lift off? If anyone has an opions please make comments.